Poly A to E of Camera's Lens property

What should I set for the Camera property “Fisheye Lens > Poly A to E”?

I think it is a parameter of the approximate polynomial of the Ftheta camera model, is that correct?
Also, the following document describes the Ftheta model, which polynomial parameters do the above Poly A to E correspond to?

https://forums.developer.nvidia.com/uploads/short-url/bs3RR5Ldd7i5VCjHIcryEDzrMAh.pdf

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